Cookie suddenly stopped leading the team - A
to mate with Rex
B
because the bridge was out
с
when a rabbit ran in front of them
D
after fighting Sarah

The answer would be D

Unbiased Facts about Plagiarism (note: ideally all facts should be unbiased, since facts refers to that which is regardless of whether one thinks it is or not):

36% of students paraphrase from information from the internet without footnoting.
38% of students paraphrase from written source without footnoting.
14% of students fake a bibliography
7% quote information without acknowledging that they are doing so
3% turn in papers from a term paper website

And because we want to avoid plagiarism on a question about plagiarism, I will point out that I learned these facts in "Facts and Stats" section of plagiarism.org

Okay, we're now done with that. Let's move to biased "facts" (i.e. opinions):

Original content creators think that plagiarism is punished too lightly
Students that plagiarize think that plagiarism is punished too harshly
Term papers sellers think that plagiarism is not a lapse of  integrity
Copyright lawyers think that defining plagiarism can be tricky since this exercise is usually riddled with ambiguity.
College professors think that students who commit plagiarism are ill equipped for academia.